import React, { Component } from "react";
import "./Annotation.scss";

class Edge extends Component {
  constructor(props) {
    super(props);
    this.state = {
      haloCss: "node-halo-off",
    };
  }

  componentDidUpdate() {}

  onMouseOver(e) {
    if (this.props.isSelected) {
      this.setState({ haloCss: "node-halo-on" });
    }
  }

  onMouseLeave(e) {
    if (this.props.isSelected) {
      this.setState({ haloCss: "node-halo-off" });
    }
  }

  onMouseDown(e) {
    if (this.props.onMouseDown) {
      this.props.onMouseDown(e, this.props.idx);
    }
  }

  onMouseUp(e) {
    e.stopPropagation();
  }

  render() {
    let p1, p2;
    if (!this.props.closingEdge) {
      if (this.props.idx - 1 < 0) {
        return null;
      }
      if (this.props.idx > this.props.anno.length - 1) {
        return null;
      }
      p1 = this.props.anno[this.props.idx - 1];
      p2 = this.props.anno[this.props.idx];
    } else {
      if (this.props.idx === 0 && this.props.anno.length === 1) return null;
      p1 = this.props.anno[this.props.anno.length - 1];
      p2 = this.props.anno[0];
    }
    return (
      <g
        onMouseOver={(e) => {
          this.onMouseOver(e);
        }}
        onMouseLeave={(e) => {
          this.onMouseLeave(e);
        }}
      >
        <line
          x1={p1.x}
          y1={p1.y}
          x2={p2.x}
          y2={p2.y}
          stroke="black"
          // style={this.props.style}
          strokeWidth={this.props.style.strokeWidth * 3}
          className={this.state.haloCss}
          onMouseOver={(e) => {
            this.onMouseOver(e);
          }}
          onMouseDown={(e) => this.onMouseDown(e)}
          onMouseUp={(e) => this.onMouseUp(e)}
        />
        <line
          x1={p1.x}
          y1={p1.y}
          x2={p2.x}
          y2={p2.y}
          stroke="black"
          style={this.props.style}
          className={this.props.className}
          onMouseDown={(e) => this.onMouseDown(e)}
          onMouseUp={(e) => this.onMouseUp(e)}
        />
      </g>
    );
  }
}

export default Edge;